Two pieces of as-sintered 3mol% yttria tetragonal zirconia polycrystals were joined and the electrical response of this composite was compared with the one of its counterparts. The joined sample showed higher electrical conductivity than the assintered sample. This effect was attributed to the joining process.<br><br>La respuesta eléctrica de la unión superplástica de dos muestras de 3mol% Y-TZP ha sido comparada con la de una muestra sin unir. La muestra unida presenta una conductividad eléctrica mayor que la muestra sin unir. Este aumento de conductividad se atribuye al proceso de unión.